Stainless steel 316 L is combination of chromium-nickel-molybdenum austenitic stainless steel developed to improve the corrosion resistance better than alloy 304.It also provides higher creep, stress-to-rupture ratio and good tensile strength at elevated temperatures. Machining in Distilled water has given better result at higher MRR and low tool wear rate than in kerosene. The machining accuracy was not very good but the surface finish was slight better. This paper deals with the optimization and analysis of the EDM process of SS 316L. The Taguchi method was used to determine the combination of EDM process parameters like current, pulse ON, pulse OFF, Voltage which minimize surface roughness and maximize hardness of the material. The experiments were planned & performed as per L9 orthogonal array (OA) and signal-to-noise (S/N) ratio was applied to determine the proposed performance characteristics.

Titanium and its alloys are the most commonly and most widely used due to its significant properties like good biocompatibility , good tensile strength , low density , and good creep property up to 300 degrees centigrade .It is used in the major engineering fields like civil engineering , nuclear engineering , aerospace engineering etc. Surface finish of the titanium material plays a prominent role in influencing its functional characteristics like wear resistance, fatigue strength, corrosion resistance and power loss due to friction. In normal machining methods like turning, milling or even classical grinding can’t meet the desired surface finish. To overcome this one of the method employed is burnishing, which is very simple and effective method for improvement in surface finish and can be carried out on lathe machine. The latest innovate technique used in the burnishing is the cryogenic burnishing in which the liquid nitrogen is supplied as the coolant. This work deals with study of different burnishing processes of titanium alloy Ti-6Al-4V.